From: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
To: Christoph Hellwig <hch@lst.de>
Cc: devicetree@vger.kernel.org, catalin.marinas@arm.com,
robin.murphy@arm.com, jeremy.linton@arm.com,
linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org,
robh+dt@kernel.org, linux-rpi-kernel@lists.infradead.org,
Frank Rowand <frowand.list@gmail.com>,
ardb@kernel.org, linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v3 3/8] of/address: Introduce of_dma_get_max_cpu_address()
Date: Thu, 15 Oct 2020 12:03:15 +0200 [thread overview]
Message-ID: <5eb3087cf1759f1b64c41831df86713be2a8be9d.camel@suse.de> (raw)
In-Reply-To: <20201015054244.GD12218@lst.de>
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On Thu, 2020-10-15 at 07:42 +0200, Christoph Hellwig wrote:
> > +phys_addr_t __init of_dma_get_max_cpu_address(struct device_node *np)
> > +{
> > + phys_addr_t max_cpu_addr = PHYS_ADDR_MAX;
> > + struct of_range_parser parser;
> > + phys_addr_t subtree_max_addr;
> > + struct device_node *child;
> > + phys_addr_t cpu_end = 0;
> > + struct of_range range;
> > + const __be32 *ranges;
> > + int len;
> > +
> > + if (!np)
> > + np = of_root;
>
> Requiring of_root to be passed explicitly would seem more natural
> to me than the magic NULL argument. There doesn't seem to be any
> precedent for that kind of calling convention either.
I inspired that behavior from __of_find_all_nodes(). I'll change it.
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next prev parent reply other threads:[~2020-10-15 10:03 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-14 19:12 [PATCH v3 0/8] arm64: Default to 32-bit wide ZONE_DMA Nicolas Saenz Julienne
2020-10-14 19:12 ` [PATCH v3 1/8] arm64: mm: Move reserve_crashkernel() into mem_init() Nicolas Saenz Julienne
2020-10-15 8:40 ` Will Deacon
2020-10-15 8:55 ` Nicolas Saenz Julienne
2020-10-14 19:12 ` [PATCH v3 2/8] arm64: mm: Move zone_dma_bits initialization into zone_sizes_init() Nicolas Saenz Julienne
2020-10-14 19:12 ` [PATCH v3 3/8] of/address: Introduce of_dma_get_max_cpu_address() Nicolas Saenz Julienne
2020-10-14 22:02 ` Rob Herring
2020-10-15 6:56 ` Ard Biesheuvel
2020-10-15 9:16 ` Nicolas Saenz Julienne
2020-10-15 9:18 ` Ard Biesheuvel
2020-10-15 8:54 ` Nicolas Saenz Julienne
2020-10-15 5:42 ` Christoph Hellwig
2020-10-15 10:03 ` Nicolas Saenz Julienne [this message]
2020-10-16 13:19 ` Rob Herring
2020-10-14 19:12 ` [PATCH v3 4/8] of: unittest: Add test for of_dma_get_max_cpu_address() Nicolas Saenz Julienne
2020-10-14 22:04 ` Rob Herring
2020-10-15 9:51 ` Nicolas Saenz Julienne
2020-10-14 19:12 ` [PATCH v3 5/8] dma-direct: Turn zone_dma_bits default value into a define Nicolas Saenz Julienne
2020-10-15 5:38 ` Christoph Hellwig
2020-10-15 10:05 ` Nicolas Saenz Julienne
2020-10-14 19:12 ` [PATCH v3 6/8] arm64: mm: Set ZONE_DMA size based on devicetree's dma-ranges Nicolas Saenz Julienne
2020-10-15 5:39 ` Christoph Hellwig
2020-10-15 10:05 ` Nicolas Saenz Julienne
2020-10-14 19:12 ` [PATCH v3 7/8] arm64: mm: Set ZONE_DMA size based on early IORT scan Nicolas Saenz Julienne
2020-10-15 10:31 ` Lorenzo Pieralisi
2020-10-16 6:56 ` Ard Biesheuvel
2020-10-15 14:26 ` Hanjun Guo
2020-10-15 15:15 ` Nicolas Saenz Julienne
2020-10-15 18:03 ` Catalin Marinas
2020-10-16 6:51 ` Hanjun Guo
2020-10-16 6:54 ` Ard Biesheuvel
2020-10-16 7:27 ` Hanjun Guo
2020-10-16 7:34 ` Hanjun Guo
2020-10-14 19:12 ` [PATCH v3 8/8] mm: Update DMA zones description Nicolas Saenz Julienne
2020-10-15 5:40 ` Christoph Hellwig
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